Sailing mostly PHRF, I have tried both Dacron and composites, I do not think that the $$$'s for the composites are worth it for a boat the size of a J-30. They probably are slightly faster out of the box, but age faster. Dacron can still be stretched to a decent shape after a few years. My Dacron main has done well competing against other PHRF boats sailing with composite sails (3rd Key West, 2nd Block Island). However, I do race with composite headsails.
Ed Austin
Chinook
